:root {
  --bg: #0a1120; --panel: #111c30; --panel2: #0d1626; --card: #131f36;
  --text: #e8eef9; --muted: #95a6c4; --accent: #4f8cff; --accent2: #38bdf8;
  --border: #1d2a44; --in: #1b2740; --out: #2a4a8c; --ok: #34d399; --warn: #fbbf24; --bad: #f87171;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; margin: 0; }
body { font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif; background: var(--bg); color: var(--text); }
.muted { color: var(--muted); }
.error { color: var(--bad); font-size: .9rem; }
button { cursor: pointer; font: inherit; }
a { color: inherit; text-decoration: none; }
input, textarea, select {
  background: var(--panel2); border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 12px; color: var(--text); font: inherit; width: 100%;
}
textarea { resize: vertical; min-height: 90px; }
.btn { background: var(--accent); color: #fff; border: 0; border-radius: 10px; padding: 10px 16px; font-weight: 600; }
.btn:hover { opacity: .92; }
.btn-sm { padding: 6px 11px; border-radius: 8px; font-size: .85rem; }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--muted); padding: 7px 12px; border-radius: 9px; }
.btn-danger { background: transparent; border: 1px solid var(--bad); color: var(--bad); }

/* Login */
.login-screen { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card { background: var(--panel); border: 1px solid var(--border); border-radius: 18px; padding: 32px; width: 100%; max-width: 360px; display: flex; flex-direction: column; gap: 12px; text-align: center; }
.login-logo { width: 84px; height: 84px; border-radius: 18px; margin: 0 auto 4px; }
.login-card h1 { margin: 0; font-size: 1.4rem; }
.login-card button[type=submit] { background: var(--accent); color: #fff; border: 0; border-radius: 10px; padding: 12px; font-weight: 600; }

/* Layout */
.app { height: 100vh; display: grid; grid-template-columns: 230px 1fr; }
.nav { background: var(--panel2); border-right: 1px solid var(--border); display: flex; flex-direction: column; padding: 16px 12px; }
.nav-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; padding: 4px 8px 16px; }
.nav-brand img { width: 30px; height: 30px; border-radius: 8px; }
.nav-links { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.nav-links a { padding: 10px 12px; border-radius: 10px; color: var(--muted); font-size: .95rem; }
.nav-links a:hover { background: var(--panel); color: var(--text); }
.nav-links a.active { background: var(--accent); color: #fff; }
.nav-foot { display: flex; flex-direction: column; gap: 8px; padding-top: 12px; border-top: 1px solid var(--border); font-size: .85rem; }

.content { overflow-y: auto; padding: 24px 28px; min-width: 0; }
.page-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; gap: 12px; flex-wrap: wrap; }
.page-head h2 { margin: 0; font-size: 1.4rem; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }

/* Cards / grid */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 14px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 18px; }
.stat .num { font-size: 2rem; font-weight: 700; }
.stat .lbl { color: var(--muted); font-size: .9rem; margin-top: 4px; }

/* Chips */
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip { background: transparent; border: 1px solid var(--border); color: var(--muted); padding: 6px 12px; border-radius: 999px; font-size: .85rem; }
.chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.badge { font-size: .72rem; padding: 2px 8px; border-radius: 999px; background: var(--panel); border: 1px solid var(--border); color: var(--muted); text-transform: capitalize; }
.badge.ok { color: var(--ok); border-color: var(--ok); }
.badge.warn { color: var(--warn); border-color: var(--warn); }
.badge.bad { color: var(--bad); border-color: var(--bad); }

/* Tables / lists */
.list { display: flex; flex-direction: column; gap: 8px; }
.item { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; display: flex; gap: 12px; align-items: center; }
.item .grow { flex: 1; min-width: 0; }
.item .ttl { font-weight: 600; }
.item .sub { color: var(--muted); font-size: .88rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.avatar { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; color: #fff; flex-shrink: 0; }
.avatar.facebook { background: #1877f2; } .avatar.instagram { background: linear-gradient(45deg,#f09433,#dc2743,#bc1888); }

/* Inbox 2-pane */
.inbox { display: grid; grid-template-columns: 320px 1fr; gap: 0; height: calc(100vh - 48px); margin: -24px -28px; }
.inbox-list { border-right: 1px solid var(--border); display: flex; flex-direction: column; min-height: 0; background: var(--panel2); }
.inbox-list .chips { padding: 14px; border-bottom: 1px solid var(--border); }
.conv-list { list-style: none; margin: 0; padding: 0; overflow-y: auto; flex: 1; }
.conv-item { padding: 12px 16px; border-bottom: 1px solid var(--border); cursor: pointer; display: flex; gap: 10px; }
.conv-item:hover, .conv-item.active { background: var(--panel); }
.conv-item.active { border-left: 3px solid var(--accent); }
.thread { display: flex; flex-direction: column; min-height: 0; }
.thread-head { padding: 14px 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; font-weight: 600; }
.messages { flex: 1; overflow-y: auto; padding: 18px; display: flex; flex-direction: column; gap: 8px; }
.msg { max-width: 70%; padding: 9px 13px; border-radius: 14px; font-size: .95rem; line-height: 1.35; }
.msg.in { background: var(--in); align-self: flex-start; border-bottom-left-radius: 4px; }
.msg.out { background: var(--out); align-self: flex-end; border-bottom-right-radius: 4px; }
.msg .meta { display: block; font-size: .68rem; color: var(--muted); margin-top: 4px; }
.reply { display: flex; gap: 10px; padding: 14px 18px; border-top: 1px solid var(--border); }
.empty { display: grid; place-items: center; height: 100%; padding: 24px; text-align: center; color: var(--muted); }

/* Forms layout */
.form-grid { display: grid; gap: 14px; max-width: 640px; }
.field label { display: block; font-size: .85rem; color: var(--muted); margin-bottom: 6px; }
.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: grid; place-items: center; z-index: 50; padding: 20px; }
.modal { background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 24px; width: 100%; max-width: 560px; max-height: 90vh; overflow-y: auto; }
.modal h3 { margin-top: 0; }

.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); background: var(--panel); border: 1px solid var(--border); padding: 12px 20px; border-radius: 12px; z-index: 100; }
.toast.bad { border-color: var(--bad); color: var(--bad); }
.toast.ok { border-color: var(--ok); }

@media (max-width: 800px) {
  .app { grid-template-columns: 64px 1fr; }
  .nav-brand span, .nav-links a span, .nav-foot { display: none; }
  .inbox { grid-template-columns: 1fr; }
}